Our lungs fuel us with oxygen, the body's life-sustaining gas.
我们的肺给我们泵入氧气，我们维持生命的气体。
However, there is no clear definition of what constitutes a life-sustaining therapy.
然而，对维持生命的治疗的组成目前还没有清楚的界定。
They are vital for sustaining life in some of the driest parts of the world.
它们对于在世界上一些最干旱的地区维持生命至关重要。
The energy sustaining life today is also from the sun.
今天维持生命的能量也来源于太阳。
It means that right now, these machines are sustaining her life.
我是说，此刻是这些机器在维持她的生命。
It means that right now, these machines are sustaining her life.
我是说，此刻是这些机器在维持她的生命。
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